Basics of OCC Screening （second）

Screening efficiency impact factors

• Reject rate
• Basket type
• Slots gap
• Bar depth/angel
• Velocity
• Open area

Rotor Pulse

• Pressure pulse forces the stock through the screen
• Vacuum pulse draws disturbing components away from the screen surface, removing them from the screen area
• The higher the rotor peripheral speed, the greater the pressure pulse
• The higher the pressure, the worse the screening efficiency

Screen Basket Profile with high turbulence

• Bar angle fit for different application
• Bar angle even more important than slot gap